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D2 W MDME 2400 Wireless Ethernet Modem 

IF 1584 Rev. 1

 

IF 1584 Rev. 1 

Page 12 

 

2.2.2  Directional Antennas.   

Directional antennas can be: 

‰

 

A Yagi antenna with a main beam and 
orthogonal elements; 

‰

 

A directional radome, which is 
cylindrical in shape; or 

‰

 

A parabolic antenna. 

A directional antenna provides high gain 
in the forward direction, but lower gain in 
other directions.  This may be used to 
compensate for coaxial cable loss for 
installations with marginal radio path.   

Yagi antennas should be installed with the 
main beam horizontal, pointing in the 
forward direction.  If the Yagi is 
transmitting to a vertically mounted omni-
directional antenna, then the Yagi 
elements should be vertical.  If the Yagi is 
transmitting to another Yagi, then the 
elements at each end of the wireless link need to be in the same plane (horizontal or vertical). 

30 cm  minimum

COLLINEAR 
ANTENNA

MAST

EARTH STAKE  
IF GROUND 
CONDITIONS ARE 
POOR, INSTALL 
MORE THAN ONE 
STAKE 

INSTALL AERIAL ABOVE 

 

LOCAL OBSTRUCTIONS

 

TX/RX

 

MODEM 

SURGE 

 

ARRESTOR

 

(OPTIONAL)

 

COAXIAL CABLE

 

WEATHE

 

RPROOF 

 

CONNECTORS WITH 
“3M 23” TAPE

 

STRESS RELIEF 
LOOP

 

PROVIDE GOOD 

 

GROUND 

 

CONNECTION TO 

 

MAST,  MODULE 

 

AND SURGE 

 

ARRESTOR

 

GND

 

 

D2 W MDME

 

Antenna installed
with drain holes 
down

Coax feed 
looped

90

o

 

Содержание D2 W MDME 2400 1

Страница 1: ...er on CAUTION For continued protection against risk of fire replace the internal module fuse only with the same type and rating CAUTION Antennas used with this device must be installed to provide a se...

Страница 2: ...ms without consulting Cooper Crouse Hinds first 1 A radio license is not required in some countries provided the module is installed using the aerial and equipment configuration described in the D2 W...

Страница 3: ...A CHANNEL 19 3 3 CONFIGURING THE UNIT FOR THE FIRST TIME 20 3 4 1 Set PC to Same Network as D2 W MDME 2400 20 3 4 2 Set D2 W MDME 2400 to Same Network as PC 23 3 4 NETWORK CONFIGURATION 25 3 5 ETHERN...

Страница 4: ...INFORMATION AVAILABLE 63 4 2 1 Connectivity 63 4 2 2 Monitor Communications 64 4 2 3 Statistics 65 4 2 4 Network Traffic Analysis 65 4 3 TESTING RADIO PATHS 65 4 4 UTILITIES 66 4 4 1 Ping 66 4 4 2 IPC...

Страница 5: ...Ethernet devices however appropriate driver applications are required in the host devices to handle the different data format The D2 W MDME 2400 does provide connection functionality between serial Mo...

Страница 6: ...his example it doesn t matter which unit is the Access Point The second diagram shows an existing LAN being extended using D2 W MDME 2400s In this example the Access Point should be configured at the...

Страница 7: ...uter between LAN A and LAN B Alternatively the Access Point could be configured as a Router the wireless link is then part of LAN B If more than two Routers are required within the same radio network...

Страница 8: ...2400 requires an antenna and a power supply Power the D2 W MDME 2400 and make an Ethernet connection to your PC for further information on how to do this refer to Section 3 4 Set the D2 W MDME 2400 a...

Страница 9: ...GND terminal on the D2 W MDME 2400 module this is to ensure that the surge protection circuits inside the D2 W MDME 2400 module are effective 2 2 Antenna Installation The D2 W MDME 2400 module will op...

Страница 10: ...flected radio signals adversely affect the signal strength This can be checked by moving the antenna a short distance 10 cm or 4 inches if the signal increases significantly then there are multi path...

Страница 11: ...problems with radio systems as it greatly increases the radio losses We recommend that the connection be taped first with a layer of PVC tape then with a vulcanizing tape such as 3M 23 tape and final...

Страница 12: ...m horizontal pointing in the forward direction If the Yagi is transmitting to a vertically mounted omni directional antenna then the Yagi elements should be vertical If the Yagi is transmitting to ano...

Страница 13: ...e a floating supply or negatively grounded The power requirements of the D2 W MDME 2400 unit are 240mA 12V or 150mA 24VDC This is inclusive of radio and Ethernet ports active and serial port plugged i...

Страница 14: ...rt The RS485 port provides for communication between the D2 W MDME 2400 unit and its host device using a multi drop cable Up to 32 devices may be connected in each multi drop network As the RS485 comm...

Страница 15: ...ation Page 15 November 2008 HOST D2 W MDME 2400 HOST RS485 CONNECTIONS 120 RS485 SUPPLY RS232 DIP SWITCH FOR 120 120 HOST HOST D2 W MDME 2400 RS485 CONNECTION USING TERMINATING RESISTOR ETHERNET DIO D...

Страница 16: ...s provided to maintain reliable operation of driving relays The digital input is connected between the DIO terminal and common COM The I O circuit includes an LED indicator which is lit when the digit...

Страница 17: ...a two step process Authentication and Association During Authentication the Client and Access Point check if their configurations permit them to establish a link Once the Client has been authenticate...

Страница 18: ...AP with a stronger signal than the current AP providing SSID is the same and capability information is compatible it may disconnect from the first AP and establish a link with the second AP This funct...

Страница 19: ...channel as the AP when a connection is established Although each channel is only 5 MHz wide the radio transmission is much wider Hence the channels overlap The following diagram shows the RF energy d...

Страница 20: ...and modification of configuration The configuration can be accessed using Microsoft Internet Explorer This program is shipped with Microsoft Windows or may be obtained freely via the Microsoft web si...

Страница 21: ...he RUN position and cycle power at the conclusion of configuration for resumption of normal operation Power up the D2 W MDME 2400 module Open Network Settings on your PC under Control Panel The follow...

Страница 22: ...ss Proxy for Local Addresses Enter the default IP address for the D2 W MDME 2400 http 192 168 0 1XX where XX is the last two digits of the serial number A welcome web page should be displayed as illus...

Страница 23: ...400 to SETUP position b Connect the RS232 port on the D2 W MDME 2400 to the RS232 port on the PC using a straight through serial cable c Open a terminal package such as Hyperterminal with 19200bps dat...

Страница 24: ...N Reset 802 11 Interface Checking 802 11 NIC Base Address 0x30000000 Register Read Write Test OK Initialising Successful Getting Serial Number Reading Buffer Serial Number 99SA01000000 Done Recovery C...

Страница 25: ...erfaces In general IP address selection will be dependant upon the connected wired Ethernet device s before connecting to an existing LAN consult the network administrator A system of D2 W MDME 2400s...

Страница 26: ...o the IP address you require Ethernet IP Subnet Mask The IP network mask of the D2 W MDME 2400 on its Ethernet port This should be set to the IP address you require Wireless IP Address The IP address...

Страница 27: ...ddress SSID The Passphrase must be between 8 and 63 characters in length and must be the same for all D2 W MDME 2400 units in the same system Save and Reboot Save settings to non volatile memory and r...

Страница 28: ...address mode must be used by D2 W MDME 2400 Clients when they have to communicate with third party non D2 W MDME 2400 Access Points However 4 address mode which is also used for multiple Access Point...

Страница 29: ...suitable for the majority of applications and should only be modified by experienced users The D2 W MDME 2400 allows for configurable fixed or fallback radio transmission Data Rates When a fixed rate...

Страница 30: ...be transmitted in more than one message or fragment Fallback Probation Counter When one of the fallback Data Rates is selected the radio Data Rate may be upgraded to the next highest rate after this...

Страница 31: ...The Spanning Tree Algorithm maintains a single path between all nodes in a network by forming a tree like structure The Bridge Priority determines where the node sits in the tree A Bridge configured w...

Страница 32: ...a simple repeater network use a bridge interface A WDS bridge interface allows traffic to be bridged to another Access Point on the same IP network WDS bridge interfaces do not require additional IP...

Страница 33: ...ts by SSID and their corresponding passphrases must be specified since WPA Pre Shared Keys are derived from both passphrase and SSID WEP encryption can only be used for a WDS link when WEP has also be...

Страница 34: ...d D can all exchange data with each other as can all of their clients as if they were all on the same wired segment It can be seen that there are redundant paths and therefore the possibility for loop...

Страница 35: ...les A B C and D can all exchange data with each other The bridged example has the advantage of redundancy but at the expense of extra overhead The routed example below cannot provide the redundancy of...

Страница 36: ...n below It can be seen that there are three 3 entries in the WDS Connections list The first entry specifies a connection to the Access Point whose SSID is A and that it is to be a WDS router interface...

Страница 37: ...r the WDS link to unit C Note that we choose to always use the same host address of 3 for unit B on all of its interfaces regardless of the network address The third WDS entry above specifies the WDS...

Страница 38: ...able in 125msec increments Bridge Maximum Age The max age timer is the maximum length of time that passes before a bridge port saves its configuration BPDU information Time selectable in 125msec incre...

Страница 39: ...WEP key will be inherited Passphrase When WPA Encryption is selected enter the WPA passphrase for this WDS link here Router IP Leave this field blank if this WDS interface is to be bridged with the d...

Страница 40: ...to be configured In this example the D2 W MDME 2400 clients need only specify the Access Point as their default gateway i e they require no routing rules be configured However for the Access Point to...

Страница 41: ...gurable parameters of a routing rule Name A name to describe the routing rule Max 32 characters Destination The destination network or host IP address to specify a network address set the host address...

Страница 42: ...s or as a White List to allow traffic for listed devices and protocols The filter operates on two rules listed below 1 A Black List has priority over a White List Traffic matching detail in a Black Li...

Страница 43: ...with the configuration Simply switch the dip switch to SETUP and cycle power The D2 W MDME 2400 will retain its configuration however will load up at IP address 192 168 0 1XX netmask 255 255 255 0 wit...

Страница 44: ...n ARP and an ICMP filter for the same IP Address range The ARP filter is required whenever the sending device does not have a fixed IP to MAC address translation table entry i e whenever the device ma...

Страница 45: ...sult of this is similar to bridging for a single device with some exceptions One of these exceptions is the inability to handle name server searches of the network via this serial link For example you...

Страница 46: ...D2 W MDME 2400 Wireless Ethernet Modem IF 1584 Rev 1 IF 1584 Rev 1 Page 46 2 On the New Connection Wizard click Next 3 Set up an advanced connection 4 Connect directly to another computer...

Страница 47: ...Chapter Three Operation Page 47 November 2008 5 Set PC as guest 6 Set Computer Name 7 Select a COM port 8 Select availability 9 Click Finish...

Страница 48: ...maximum speed is 115200bps click OK 13 Select Networking Tab click on Internet Protocol TCP IP in list box and then click Properties button 14 On Properties form click Advanced button 15 On Advanced T...

Страница 49: ...o connect to the specified remote server When configured as Multicast Group the module will broadcast data to all members of the same Multicast Group Some of the possible serial gateway topologies are...

Страница 50: ...s Server the module will wait for a connection to be initiated by a remote client Listen Port Server only Enter the TCP port number on which the server must listen for incoming connections The standar...

Страница 51: ...box to enable the Modbus TCP to RTU Gateway on the RS232 port Only a single serial port is allowed at a time Enable RS485 Modbus TCP to RTU Gateway Check this box to enable the Modbus TCP to RTU Gatew...

Страница 52: ...he on board Digital Input Output and are shared for both Client and Server Modbus TCP Client Master and Modbus TCP Server Slave are both supported simultaneously and when combined with the built in Mo...

Страница 53: ...oard general purpose I O registers The Modbus TCP Server is shared with the Modbus TCP to RTU Gateway so that the Modbus Device ID is used to determine if a Modbus transaction is to be routed to the o...

Страница 54: ...e meaning that there will be a 500msec delay between each of the mappings directed at any server The Reset Registers on Comms Fail option is enabled with a timeout of 60 seconds indicating that any of...

Страница 55: ...is the IP Address of unit C since the Modbus TCP to RTU Gateway at unit C converts the Modbus TCP message to Modbus RTU and routes it out the serial port to unit D The third mapping takes the eight 8...

Страница 56: ...completed Modbus TCP Client Mappings Local Register Enter the starting on board I O register number that the specified Modbus Master transaction will transfer I O to from I O Count Specify the number...

Страница 57: ...ion connect a PC to the local module run Internet Explorer and enter the IP address of the remote unit the configuration page of the remote module will be shown and changes can be made If the remote m...

Страница 58: ...of IP address 192 168 0 1 netmask 255 255 255 0 Open configuration web page with Internet Explorer at address http 192 168 0 1XX where XX is the last two digits of the serial number When prompted for...

Страница 59: ...serial cable to D2 W MDME 2400 and power up unit d When prompted strike the Enter key to abort automatic boot e Set IP address of D2 W MDME 2400 to 192 168 0 200 with command bip 192 168 0 200 f Set...

Страница 60: ...y IP address is that of the D2 W MDME 2400 Access Point as 169 254 102 54 Access Point Configuration Connect straight through Ethernet cable between PC and D2 W MDME 2400 Ensure configuration PC and D...

Страница 61: ...to Bridge Set the Gateway IP address to 169 254 102 54 Set the Ethernet IP address to 169 254 102 53 network mask 255 255 255 0 Set the Wireless IP address to 169 254 102 53 network mask 255 255 255 0...

Страница 62: ...on the front panel indicates correct operation of the unit This LED turns red on failure as described above When the OK LED turns red shutdown state is indicated On processor failure or on failure du...

Страница 63: ...MDME 2400 will fail to be authorized if the encryption keys are incorrect The received signal strength background noise and radio data rate is listed for each Client or Access Point by their MAC Addr...

Страница 64: ...ssages occur very frequently they have been filtered out from the Monitor Communications display for convenience Monitor Communications lists the frame type of each transmission and various statistics...

Страница 65: ...raffic on the wired Ethernet a better idea of regular traffic can be discovered Network Analysis programs make configuration of a filter for the D2 W MDME 2400 a simple task 4 3 Testing Radio Paths Th...

Страница 66: ...r example a user cannot ping a host then the user will be unable to send files to that host Ping operates by sending a packet to a designated address and waiting for a response The basic operation of...

Страница 67: ...l use Ctrl C A good test for the network once it is first set up is to use Ping repeatedly from one PC s IP address to the other PC s IP address This gives a good example of the network s reliability...

Страница 68: ...is connected to Other IPCONFIG commands will return back more information The hardware or MAC address of the computer may be discovered using the command IPCONFIG all IPCONFIG will list all of the com...

Страница 69: ...orks together via the D2 W MDME 2400 refer to Section 1 1 for more information The D2 W MDME 2400 can only accept 1 routing table That is it can only accept one router per network of radios On the rou...

Страница 70: ...68 2 051 Subnet Mask 255 255 255 0 In the Network A PC a routing rule is to be set This will allow Network A and B to have access to each other This is entered under cmd prompt Route ADD 192 168 2 0 M...

Страница 71: ...5 to 60 degrees C 30 to 140 degrees F 0 99 RH Non condensing Power Supply Nominal Supply 9 to 30VDC Overvoltage and reverse voltage protected Average Current Drain 240 mA 12V 150mA 24VDC Current Drain...

Страница 72: ...t 2 pin terminal block Max distance 4000 1 2 km Data rate bit sec configurable 1200 2400 4800 9600 14400 19200 38400 57600 76800 115200 7 or 8 data bits Stop start parity bits configurable System Para...

Страница 73: ...st be upgraded using the FlashUpdate utility and can only be performed local to the module The FlashUpdate utility should also be used if Firmware versions of modules to be upgraded are unknown The se...

Страница 74: ...button to just program the new Firmware to the unit A reset is necessary to run the new Firmware This is useful for maintaining radio link while performing upgrades to remote units 6 The following dia...

Страница 75: ...C Ethernet port via a straight through Ethernet cable Straight through Ethernet cable is typically a blue color Alternatively connect the module to PC via a network switch or hub as some configuration...

Страница 76: ...age Select Unblock so that FlashUpdate program may operate If any other firewall software is operating disable it 7 Copy new Firmware files to a known location on the hard drive of your PC Do not unzi...

Страница 77: ...connected to which can be found from Step 4 above 12 Click on Upgrade button in FlashUpdate program 13 Follow instructions from confirmation window 14 Click OK Power down module wait approximately 1 s...

Страница 78: ...thernet Modem IF 1584 Rev 1 IF 1584 Rev 1 Page 78 15 Programming will commence 16 If programming was successful a dialog box is displayed showing this 17 Switch dip switch to RUN position and cycle po...

Страница 79: ...an eight wire cable was being used for instance the signal would start on pin one at one end of the cable and end up on pin eight at the other end They cross over from one side to the other CSMA CA CS...

Страница 80: ...members of a network WEP uses an encryption key that automatically encrypts outgoing wireless data On the receiving side the same encryption key enables the computer to automatically decrypt the info...

Страница 81: ...net This includes VoIP Voice over IP IP address A 32 bit number that identifies each sender or receiver of information that is sent across the Internet An IP address has two parts an identifier of a p...

Страница 82: ...unique code assigned to most forms of networking hardware The address is permanently assigned to the hardware so limiting a wireless network s access to hardware such as wireless cards is a security f...

Страница 83: ...ecret key back to the server in order to have a secret key exchange for that session Sub network or Subnet Found in larger networks these smaller networks are used to simplify addressing between numer...

Страница 84: ...he security of information transferred over the Internet VPN can work with either wired or wireless networks as well as with dial up connections over POTS VPN creates a private encrypted tunnel from t...

Страница 85: ...es have restrictions for use Luxemburg General authorization required for network and service supply This implies a license to use the band is required from local radio spectrum authorities Norway Doe...

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